Improvement in dyeing and printing a black color on fabrics with aniline compounds



To all whom it may concern:

UNITED i STATES PATENT OFFICE:

Joan LIGHIFOOT, or Aoonmeron, ENGLAND.-

. IMPROYEMENT'IN DYEING A ND PRIilTING A BLACK COLOR ON ,FABRICS- WITH Amuse COMPOUNDS.

Specification forming part df Letters PatentN0.-38,9, dated May 19,1863.

Be it knownjthat I, JOHN Lrencrroor, ot

' Accrington in the county of Lancaster :and

Kingdom of England, chemist, have invented or discovered new anduseful Improvements in Printing and Dyeing Te'xtile Fabrics and Yarns; and I do hereby declare that the following is afull and-exact description thereofthat is to say Thesedmprovem-ents consist in the production of a black dye on textile fabrics or yarns by printing or staining them with a salt or salts of aniline or any analogous homologous or isomeric com-pounds mixed with certain me-- tallic salts or their oxides as a mordant, as hereinafter described. I takeonegallon ofv water and dissolvein it four ounces chlorate of potash. To this I add aniline or-anyaualog'ous homologous or isomeric matters, using by preference aniline in the proportion of eight ounces, previously combining it with eight ounces of hydrochloric acid at 32 Twaddle. After stirring well I add one pintof acetic acid a and eight ounces, measupe, of perchloride of atv from 609 to 70v Fahrenheit for two or thre days. The goods are now passed through water alone or a solution containing" alkaline or metallic salts, (which developthe black much sooner and better.) The alkalies and alkaline I earths may be used for raising the blackysuch,

'as-causticlsoda, caustic potash, caustic ammonia, caustic lime in solution in water; orthe goods may be passed, after printing and dyeing, through a box containing rollers supplied with ammoniacal gas,. (which I prefer when the black is printed along with steam ,colors prior to steaming the goods.) When --.the blackiis printed along with madder or gara'ncine colors theyare aged or exposed in'a room at from 60 to 70 Fahrenheit for three days, and dunged, dyed, washed, and

passed through a, solution'of soap or dilute hypochlorite of lime, whereby'an intense black is produced. 7

, For printing on fabrics or yarns, Ltakej one gallon of starch-paste (containing one pound,

weight, starch per gallon) or'other suitable thickening ingredient and dissolve 'in it four ounces chlorate, of potash and eight ounces "aniline previously combined with eight ounces. I

hydrochloric acid. 1 I then add four ounces,

-. measure, of perchloride of copper at 88 Twaddie and two ounces 'sal-ammpniac or. an equivalentiquantity of other suitable' alkaline chlor1de. After printing this color I age for three nights and raise in water alone, or weak alkali,

the same result. Neither do I confine myself to the use of alkaline chlorides, for they can. 1

be dispensed with when certain metallic Salts are used, such as sulphate of copper, chloride 0 copper, chloride of antimony, nitrate of nickel, nitrate of bismuth, 8E0. The vsalts of several other metals may also be substituted for those of copper for producing a black dye or printing material for black, such as soluble compounds of antimony, bismuth-,.chroni ium,

iron, manganese, nickel; and in some cases I pad the cloth I in a solution of any of the metallic salts named, either separately or mixed together, dry, and print or paid ona thickened salt of aniline in combination with-chlorate of potash, age three to four nights, and finish as previously stated; or I pad the cloth in a solution of any of the metallic salts named, as before. I then precipitate the oiride ofthe metal or metals used in the cloth by passing through a solution of alkali suitable to the metal used, wash, dry, and print or pad on a thickened 'acid' salt of. aniline in combination with chlorate of-potash, age three to four nights, and finish as before.

I do not confine myself to the precise details herein mentioned, nor totheexact quantities herein stated, as they may be slightly modified without departing from the spirit of my invention; but What I claim'as my invention is-- Y I The use of certain metallic'salts'or their oxides,-as hrein stated, either alone or combined with chlorate of potash and then mixed with a saltor salts of; aniline or anyanalogous homologous or isomeric compounds, either singly or mixed together, aswell as the process or series of processes,- as previously described, for the production of a black dye or tain. I v

one at.-the city of Manchester, England, this 21st day of February, 1863.

JOHN LIGHTFOOL In presence of- EDWARD JOSEPH Hermes,

JOHN Bnoonwon'rn;

Patehtutgents, 20 019,30 Street, Manchester. 

